Vapor-stove.



PATENTED NOV. 20, 1906.

C. J. PUFFER. VAPOR STOVE.

APPLICATION FILED JULY 6. 1904.

2 SHEETS-SHEET 1.

No. 836,403. PATENTED NOV. 20, 1906. O. J. PUFFER.

VAPOR STOVE.

APPLICATION FILED JULY 6, 1904.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

CHARLES J. PUFFER, OF AURORA, ILLINOIS, ASSIGNOR TO JOHN c.

- ROBERTS, or PEORIA, ILLINOIS.

VA POR-STOV E.

. Specification of Letters Patent.

Patented Nov. 20, 1906.

To all whom it may concern:

Be it known that I, CHARLES J L PUFFER, a citizen of the United States,residing at Au rora, in the countyof Kane and State of Illinois, haveinvented certain new and useful, Improvements in Vapor-Stoves; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

This invention has reference-to new and useful improvements in avapor-stove.

The invention has for its object a portable vapor-stove made of minimumsize and combining with the burner and generator a gasolens-tank, anair-tank, and pressure-pump, all supported in the same structure.

The invention has for its further object a burner, the gas conduitleading thereto formed of bifurcated sections, each section providedwith a jet or sin le burner for the purpose of producing a sub ame, anda gen'erator disposedbeneath the burner,.passing between the sections ofthe gas-conduit to adapt the subflame from the jets thereof to act uponthe body of the generator.

A further object of the invention is a detachable self-adjustingneedle-point for the controlling valve stem, having wings between whichis arranged grooves or channels for the passage .of the gasolene andgasolenevapor. The of the needle-point serve to guide the needle-pointto the orifice in the generator-tube in which the'regulating valve iscarried. I

A further object of the invention is a generating-tube, a needle-pointcontrolling valvestem operating in the tube having a reduced threadedextension which is connected to the main stem by a knuckle-joint, thethreaded extension of the stem having screw conneci tion with afeed-valve'operat'ing in the genervating-tube to shut ofi against thegasolene,

means being provided for lockingthe relation of the feed-valve andcontrolling valve-stem.

. The invention consists, further, in various details of construction tobe hereinafter more specifically described, and ointed out in the a gsforming a part 0 this specification,

in whic Figure 1 is a plan view of a gasolene-geneastem. Fig. 7 is anend view in section of the enerating-tube, showing the needle-point.

-' ig. 8 is a detached section of the coupling for the generating-tubeand re lating-valve. Fig. 9 is a detail in section of t e head end ofthe generating-tube. I

In the drawings, like numerals of reference indicate corresponding partsthroughout the figures.

The apparatus consists of the base-plate 1, and the casting 2-,supported above thobase and upon the same'i'by means of the corner postsor supports 3. The base may be of sheet-tin or sheet metal, while thetop casting 2 may be of cast-iron or other suitable material, cast withthe opening 4, and the grid 5, disposed above a burner, to be described.The stove is divided into two separate compartments. In one \is arrangedthe burner and generating devices, in the other the gasolene andcompressed air receptacles. The gasolene and compressed-air containingreceptacles arecarried beneath the opening 4 and the burner beneath thegrid 5.

The compartments are indicated as 6 and 7 and are separated by thepartition 8, and 9 denotes a plate-covering for the opening 4 to beplaced above the gasolene and compressedair containing receptacles, thesame being supportedupon the lips or lugs 10, cast with the top 2,as'seen in the figures;

The gasolene-tank is indicated as 11, and the air-tank as 12.-

I 13 denotes a screw-cap, by means of which ingress may be had to thetank 11, while the 'aiI tank is provided with a feed-valve 14, connectedby a tube 15 With. a suitable airpump 16. s

, 17 denotes a tube connecting the air-tank with the gasolene tank inthe usual way to provide pressure for the feed of the gasolene to thegenerator and burner, and 18 is a feedtube for the gasolene from itstank to a generating apparatus, to be described.

The burner comprises the" base-plate 19,

supported by studs of the grid 5, to which the plate 194s fastened, andthe plate 19 is provided witl'ikthe central tubular opening 21 and theannular depressed body portion 22,

forming the gas-chamber of the burner.

23 denotes a cap-plate and is the burner proper, being provided with thejets 24, which tensions 28. are provided with the laterallyextended jetsor burners 29, for the purpose of producing a subflame on thegenerator-tube,

.to be described, and the walls of the extensions 28 are lined with somesuitable perforated material 30 to hold the pressure back and preventthe entire flame of the burner passing out of the jets and diffuse it insuch a way that only a flame sufficient to keep the generator hotescapes through these jets. Connected with the gas-conduit 27 is a mixer31 for the volatile vapor and air, the open end of which is in closeproximity to the end of the generator-tube 32, which lies beneath theburner, the opening 21 therethrough and between the jets 29, where thesubflame is produced for constantly heating the tube 32. The end of thetube passes through a shield 33 extending from the gas-conduit to the under side of the burner, and prevents the ignition of the volatile vaporas it issues from the tube 32, which would be the case if the shield wasnot there, owing to the disposition of the subflame-jets, as described.The heat and also the flame from the 'ets of the gas-conduit ,while itacts on t e generating tube also passes up through the openings 21 and'25 of the burner, so that it may be utilized, as

well as the flame from the burner proper.

' The generating-tube 32 has its forward end supported in the shield 33,its rear or outer end screwed into a coupling 34, and the coupling,bymeans of a stud 35, is attached to a lip or extension 36 of the topplate 2. The coupling is further provided with a threaded tubularextension 37, with which the end of the tube 18 is so connected as toprevent leakage at this point. The coupling is provided with portions infront and rear of its inlet 37 the forward end having attached theretothe tube 32, as shown in Fig. 5, and its opposite end has theconical-shaped bore, as at 38, the remainder thereof threaded and thethreaded portion engaged by a tubular feed-valve 39,

which has a conical or tapered end 40 to coincide with the tapered orconical portion of the coupling 34, and through the wall of thegenerator, as will be clearly seen in Fig. 5.-

The feed-valve is provided with the fingerwheel 42 to facilitate theclosing and opening of the feed-valve.

The controlling-valve is an elongated stem,

(designated as 43,) dis osed' in the tube 32 somewhat as shown in ig. 5and is provided with the helical flange or screw-flange 44, forming'ahelical channel 45 around the stem 43, between the inner wall of thetube and the body of the stem, the flange 44 engaging with the wall ofthe tube. The formation of the channel 45 is for the passage of thegasolene and insures it being kept in motion within the tube andprovides for the discharge of all extraneous substance in the gasolenefrom the tube. At 46 a reduced threaded stem 47 is connected, by meansof a knucklejoint, with the end of the stem 43, the stem 47 extendingthrough the coupling 34 and having a threaded en agement with thetubular feed-val ve 39, t e end of the stem 47 projecting beyond thewheel 42 and having connected therewith the adjusting and looking nut48. The end of the stem 47 is provided with a recess or notch 49 toadapt its longitudinal adjustment in the val ve-stem 39 by the use of ascrew-driver, and the nut 48 is for locking the relative positions ofstem and feed-valve, as is apparent. The use of the knuckle-joint in thestem 43 permits the stem to wabble and adjust itself to any unevennessor irregularities in the longitudinal line of its tube and parts andprevents binding either in its use or adjustment. Between the end of thestem 43, where the knucklejoint is located, and at the end of the tubein the coupling 1 have provided a gauze packing or screen 50, whichsurrounds the stem 47 and is adapted to retard the-movement of thegasolene to insure a uniform feed of the same to the mixer.

The stem 43 at its forward end is provided with a needle-point adaptedto coact with a discharge-orifice in the end of the tube 32. Thisneedle-point (indicated as 51) is selfadjustingand detachable in thehead end of the stem 43. The needle-point consists of the tapered point52, operating in a tapered orifice 53 of the tube 43 and the centralbody portion of the needle-point is provided with a series of radialwings or guides 54, between which is arranged longitudinal channels orgrooves 55, serving as aidchannels for the member or nut 56, adapted tohave a screw adapts the forward portionof the needlepoint to wabble orhave oscillatory movement in several directions, the object of whlch isto (permit the point to have suilicient play to fin the center of theorifice in the tube 32. It is to be also noted that in the manner ofsecuring the needle-point to the .stcm rotary motion imparted to thestem will not be imparted to the needle-point, and thus there s obv1atedthe making large or boring out of the discharge-orifice in the tube byreason of the working in and out of the needle-point, and thus insuringa perfect closure when the needle-point is in the orifice. Theneedle-point is capable of having longitudinal movement imparted to it,but not IOtitlYhlOtiOIl. The head end of the tube 32 is provided with asocket or reduced tubular portion 59, communicating with thedischarge-orifice thereof, and serves as a seat for the wings or blades54 of the needle-point. In the adjustment of the stem 43 anditsneedie-point the wings in their engagement with the wall of thereduced portion 59 of the tube -will serve as a guide for directing thepoint 52 of the needle centrally in the orifice 53 of the tube. Thisform of needle-point insures the gasolene or gasolene vapor beingdischarged from the generating tube in a straight line and not at anangle, as it is found in practice that if the gasolene or vapor in it'sdischarge contacts with a metallic surface it chills it and destroys itsgood qualities and does not make a perfect mixture with the air andproduces a poor quality of gas, which is to be avoided in this class ofdevice.

To adjust the length of the stem 43 so that when the valve-stem 39 hasclosed the inletopening 41 the needle-point 52 will have also closed theorifice in the generating-tube. The stem 47, as has been indicated, willbe adjusted in the member 39, when the nut 48 will be locked on the stem47 against the wheel 42, and thus lock the relative positions of the twovalves, all of which, it is believed, is understood. There is providedon the outer end of the coupling 34 and surrounding the controllingvalve-stem 39 a packing-nut 61 and suitable packin (indicated as 62.)

The arrangement 0 the apparatus with the partition or dividing-wall 8 isto protect the gasolene-can 11 from the extreme heat produced by theburner when in operation,.

sufficient air-space being left between the parizltlon and thegasolene-can to keep it coo If it is desired to employ the withinapparatus as a gasenerating dev ce for lighting purposes, it will befound very serviceable. In this event the cap-plate 23 may or may not beused, and the construction of the outlet from the gas-conduit 27 may ormay not be reduced in size and a gas-conducting pipe substitutedtherefor (shown in dotted lines in Fig. 3 of the drawings) leading toone or more incandescent fixtures or other suitable lights. From theabove it is obvious that other suitable changes may be made and detailsand modifications resorted to without affecting the principle and scopeof the invention.

Having thus fully described my inventlon, what I claim, and desire tosecure by Letters Patent of the United States, is

1. In a device of the class described, the combination of a burner, agenerating-tube disposed beneath the burner, a mixer 1n proximity to theend of the generator, a gas-conduit leading from the mixer to the burnerand provided between the. mixer and the burner with vertically-extendingbifurcated portions having horizontally-extending jets disposed uponopposite sides. of the generator and producing a subflame adapted to actupon the generator, substantially as speclfied.

2. In a device of the class described, the combination ofagenerating-tube having a discharge-orifice and the tubular portion 59,a stem operating in the tube, a needle-point having a diminished outerend adapted for closing the orifice in the tube, the body of theneedle-pointhaving radial wings extending laterally beyond saiddiminished end between which are arranged grooves for the passage ofgasolene or vapor and the laterally-extending wings of the needle-pointfitting within said tubular portion 59 and adapted to guide theneedle-point into the orifice of the tube, substantially as specified.

3. In combination with a generating-tube having the socket 59 and thedischarge-orifice 53, of a 'stem operating in the tube, a needle-pointhaving a detachable relation with the stem and adapted to coact with theorifice in the tube, the body of the needlepoint provided with radialportions and coacting with the wall of the socket 59 for guidin theneedle-point into the orifice of the tu e, and channel-ways extendinglongitudinally between the radial portions serving as a passage for thegasoleneor vapor, substantially as specified.

4. In a device of the class described, a coupling provided with an inletinto the body thereof, a generating-tube connected. with 'the couplingand having a discharge-orifice, a

tubular feed-valve adapted for closing the inlet in the coupling, acontrolling valve-stem operating in the tube, a detachable andnonrotating needle-point of the stem coacting with the orifice in thetube, a threaded extension of the stern adapted to have connection withthe feed-valve and means for adjusting and locking the relativepositions of the feedvalve and stem carrying the needle-point,

substantially as specified.

5. In a device of the class described, the combination of agenerating-tube provided with a discharge-orifice, a coupling to whichthe inner end of the tube is connected, the same provided with afeed-opening for feeding gasolene to the tube, a stem operating in thetube having a needle-point coacting with the orifice in the tube, acontrolling valvestem for controlling the feed-opening in the coupling,and a threaded extension having a knuckle-joint with the needle-pointstem and an adjustable connection with the c0ntrolling valve-stem,substantially for the purposes specified.

6. In a device of the class described, the

combination of a coupling having a longitudinal opening, a ortion of thewall thereof being tapered an a transverse opening leading from thetapered portion of the coupling discharge-orifice therein, a reducedstem having a knuckle-joint connection with the end of the main stem andadapted to have a threaded connectionv with the feed valvestem, meansfor adjusting the relative' position of the feed valve-stem and theneedlepoint stem, and suitable packing around the reduced stem betweenthe main body of the coupling and the end of the main stem which carriesthe needle-point, substantially for the purposes specified. In testimonywhereof I affix my signature in presence of two Witnesses.

CHARLES J. PUFFER. .Witnesses:

ELLA M. WESTORN, C. L. WIDEMAN. v

